* {
  margin: 0;
  padding: 0;
}
body {
  background-image: linear-gradient(to left, rgba(101, 216, 201), rgba(78, 110, 161));
}
.index {
  display: flex;
  max-width: 1920px;
  min-width: 1024px;
  min-height: 760px;
}
.index .left {
  flex: 1;
}
.index .right {
  flex: 1;
}
.index .left .top {
  display: flex;
  margin: 1.25rem ;
}
.index .left .top span{
  margin: 0 0.833rem;
}
.index .left .top input {
  height: 1.25rem;
}
.index .left .top div {
  font-size: 0.542rem;
}
.index .left .top .tianjia {
  width: 4.167rem;
  height: 1.458rem;
  background-color: skyblue;
  color: #fff;
  font-size: 0.625rem;
}

.btn table{
margin: 1.25rem ;
border-collapse: collapse;
}

.btn table th{
  background-image: linear-gradient( rgba(101, 216, 201), rgba(78, 110, 161));
  border: 1px solid #000;
  width: 20.833rem;
  height: 2.083rem;
}

.btn table td{
  background-image: linear-gradient( rgba(101, 216, 201), rgba(78, 110, 161));
  text-align: center;
  border: 1px solid #000;
  width: 20.833rem;
  height: 2.083rem;
  line-height: 2.083rem;
}
.right{
  display: flex;
  flex-direction: column;
}
.right .box{
flex: 1;
}

.right .nav{
  flex: 1;
}